underlying strata.的用法和樣例：
例句
- Using her unique feminism perspective, she panoramically described the life of the females of the lower strata in the society.
她以自己獨特的女性視角下的女性文學，將下層女性的生存狀態詮釋得淋漓盡致。 - Surgical removal of all or part of a breast,sometimes including excision of the underlying pectoral muscles and regional lymph nodes,usually performed as a treatment for cancer.
乳房切除術，切除乳房或部分乳房的外科手術，包括位於下層的胸部肌肉和局部淋巴節，通常作為治療乳腺癌而實施的手術。
